i2d_OCSP_REQUEST
"Content-Length: %d\r\n\r\n", i2d_OCSP_REQUEST(req, NULL)) <= 0)
PEM_ASN1_write_bio((int (*)())i2d_OCSP_REQUEST,PEM_STRING_OCSP_REQUEST,\
int i2d_OCSP_REQUEST(OCSP_REQUEST *a, unsigned char **out);